/Engine/Source/Runtime/Engine/Classes/Engine/StreamableManager.h
Finds all instances of a contextual data struct which are attached to this handle
Array filled with all instances of T currently attached to this handle
template<typename T> [TArray](API\Runtime\Core\Containers\TArray)< [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< T > > GetContextDataOfType() const